Improvement in double-acting submerged pumps



UNITED STATES PATENT OFFICE.

GEORGE G. HARTWICK, OF JERSEY CITY, NEW JERSEY, AND ERNEST MARX, OF NEWYORK, N. Y.

IMPROVEMENT IN DOUBLE-ACTlNG SUBMERGED PUMPS.

Specification forming part of Letters Patent No. 160,096, dated February23, 1875; application tiled July 1l, 1874.

To all whom it may concern:

Be it known that we, GEORGE G. HART- WICK, ot' Jersey City, in the Stateof New Jersey, and ERNEST MARX, of the city of New York, N. Y., haveinvented certain Improvements in the Construction of Pumps, of which thefollowing is a specification The improvements relate to submergeddouble-action pumps, as when the areas ot' openings of ingress, egress,passage and delivery are unobstructedly the same, and the triction ofthe moving parts is at its minimum, the maximum of delivery of quantitywith the least waste in expenditure of force is reached, in so far aspumps are concerned. Our object in our improvements as shown anddescribed has been approximation to those indispensable conditions anddesired results.

ln the accompanying drawings, Figure 1 is a vertical section ofthe pump,and Fig. 2 is a top view, the dots indicating the line of section shownin Fig. l. The top is shown with the domeanddelivering-pipe removed.Fig. 3

is an outside end view of a chambered headpiece, and Fig. 4 is an insideface view of the same.

The top ct of the pump is horizontal; the bottom b is at an angle oftwenty degrees,

more or less the outer end is the channeled head-piece, Figs. 3 and 4;the side plates t and u are plane surfaces, these parts being united bysuitable anges and bolts. c and d are inlet-valves. e and f are outlets.The upper inlet-valve c, opening downward, has a counter-balance, i, tokeep it closed. A pistonvalve, g, is hinged in the acute end of theangular box or case, to which a vertical reciprocatingmotion is given bythe connectin g-rod h. The inner front j of the head-piece, Figs. 3 and4, 'is an are of a circle having the same center as the piston-valve g.At the lower end ot' the inner front j there is an opening, k, into thechannel m, between the inner front j and the outer front n, leading tothe outlet-valve c.

Having thus succinctly described construction and arrangement of theparts, what We claim as our improvement is- In combination with theangular box or case a b t u, the channeled head-piece, Figs. 3 and 4,and the piston-valve g, substantially as described, and for the purposesset forth.

GEORGE G. HARTWICK. ERNEST MARX. Witnesses:

W. M. GooDiNG, EDWARD CoLLvER..

